Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
tien manh » tien anh, tien thanh, tieng anh
tang luan » dung luan
dien anh » tieng anh, dien dan
anh tang » anh bang, anh dang, anh nang
cong san » cong tac
toan tap » toan ban
toan cao » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien manh) or (dien anh)) - anh tang luan nhung cong san ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (dien anh)) - anh tang luan nhung cong san ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (dien anh)) - anh tang luan nhung cong san ((toan tap) or (toan cao))*.